Knocking emojis capture everything from casual hellos to suspenseful arrivals. Use 👋🚪🏠 when sliding into a friend’s DMs or 🔨👣🚪 to hint at sneaky visits. The classic 🔑🔔 combo fits a doorbell notification, while 🛎️🚪 works well for hotel or service-related chats. Perfect for signaling entrances, unexpected visits, or just ringing in some attention with a little digital knock.